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drm: Make the fb refcount handover less magic

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Instead of assigning the plane->fb pointer and clearing the fb pointer
to hand over the reference, let's just do it by grabbing another
referece for plane->fb and let fb keep its original one.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180322152313.6561-8-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Ville Syrjälä 2018-03-22 17:22:57 +02:00
parent bf2d5eb902
commit 23a5e1fb34
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/drm_plane.c
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@ -1084,8 +1084,7 @@ retry:
plane->old_fb = NULL;
} else {
plane->fb = fb;
/* Unref only the old framebuffer. */
fb = NULL;
drm_framebuffer_get(fb);
}
out: